Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws
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Product Attributes
- Customization
- Available
- Grade
- Bi Metal
- Material
- Stainless Steel + Carbon Steel
- Model NO.
- UNF-01
- Standard
- DIN, GB, ANSI, BSW, JIS, GOST, ISO
- Drill Point
- #1, #2, #3, #5
- Surface Treatment
- Zinc Plated, Ruspert, Dacromet, Customized
- Delivery
- Sea Freight, Air, Train, Express
- Certification
- Eta, ISO9001, BSCI
- Application
- Solar Mounting and Outdoor
- Type
- Hexagon Head
- Groove
- Hexagon
- Head Style
- Hexagonal
- Connection
- Drilling
- Transport Package
- Carton Boxes + Pallets
- Specification
- 4.8/5.5/6.3
- Trademark
- UN
- Origin
- China
- HS Code
- 7318151001
- Production Capacity
- 700tons/Month
- Package Size
- 47.00cm * 15.00cm * 15.00cm
- Package Gross Weight
- 6.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws
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Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws -
Eta ISO9001 BSCI Solar Mounting and Outdoor Bi Metal Drilling Screws
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Product Description
| Name | Bi-metal Self-drilling Screws |
| Size | 4.8, 5.5, 6.3mm |
| Drill Point | #1, #2, #3 #5 |
| Material | SUS304+SCM435 |
| Head | Hex Washer |
| Thread | Full Thread |
| Washer | SUS304+EPDM |
| Washer Specification | E14, E15, E16, E19 and etc |
| Surface Treatment | Chrome, Ruspert, Decromet, etc |
| Application | Solar Mounting and Outdoor |
| Brand | Union |
| Certification | ETA, ISO, BSCI |
| Origin | China |
Bi-metal screws sometimes referred to as twin-fast screws, are made of two separate metals joined together. They have a carbon steel core and stainless steel exterior. Carbon steel provides strength while stainless steel provides corrosion resistance. This makes bi-metal screws ideal for use in outdoor applications like solar power systems and roofing.
Bi-metal screws are hardened through heat treatment to maximize their toughness and resistance to stripping and breaking. They can withstand high torque and grip well into materials like wood and metal. Their unique composition gives them excellent resistance to rust and corrosion compared to regular carbon steel screws.
Uses for Solar Mounting
For solar panel installations, bi-metal screws are commonly used to secure:
- Rails and brackets to the roof surface
- Frames that hold panels together
- Junction boxes and conduits
- Panels to racks and frames
Their threading grips tightly, while their stainless steel exteriors eliminate rust stains on the roofing materials. Bi-metal screws also hold up well to thermal expansion and contraction of the roof.
The combination of strength and corrosion resistance makes bi-metal screws well-suited for roofing needs. They help roofs stand up to sun, rain, snow, and wind. Their versatility allows use with many roofing materials like asphalt shingles, slate, metal sheeting, and more.
Corrosion Resistance
Stainless steel combined with a carbon steel core gives bi-metal screws excellent resistance to rust and corrosion. The stainless steel exterior protects against oxidation, allowing long-term outdoor use.
Bi-Metal Specification
| Specification | |||
| Diameter(mm) | Length(mm) | Thread Size | Drill Point |
| 4.8 | 25-220 | 16 | #1, #2, #3, #5 |
| 5.5 | 25-300 | 14 | #1, #2, #3, #5 |
| 6.3 | 19-300 | 14 | #1, #2, #3, #5 |
| 6.3/5.5 | 25-50 | 14 | #1, #2, #3, #5 |
| 6.3/5.5 | 60-300 | Double Thread | |
Bi-Metal Coating
| Surface Treatment | ||||
| Types | Class2 | Class3 | Class4 | Dacromet |
| Coating Material | Mechanical Galvanized | Mechanical Galvanized | Mechanical Galvanized | Zinc and Aluminum |
| Salt Spray Test | 500Hours | 1000Hours | 2000Hours | 1000Hours |
Report Result
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2432432". Items marked "
" are certified.
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Company Profile
Established in the early 2000s, Union Hardware began as a manufacturer and distributor of fasteners and hardware tools. In 2023, we officially consolidated into a globally focused professional hardware exporter. Our expansive product range includes photovoltaic fasteners, stainless steel fasteners, highly corrosion-resistant carbon steel fasteners, and a wide selection of hand tools (Mechanic Tools, Fastening Tools, Measuring Tools, Storage Tools, Tool Sets, PTA Kits, etc. ). Our hardware solutions are trusted across the construction, machinery, automotive, and DIY sectors. With decades of expertise producing durable, reliable products, over 85% of our goods are exported internationally.
Strategically located in Hangzhou Xiaoshan Industrial Zone, we are part of a vibrant manufacturing hub that promotes clustering effects and supply chain efficiency. Our modern facilities and proximity to Shanghai Port allow for seamless production, inventory management, and timely delivery to global markets. Leveraging our hard-won reputation for integrity, dependability, and unparalleled quality, Union Hardware continues pioneering hardware distribution. We remain committed to delivering ideal products, services, and solutions at competitive costs for trade specialists and DIYers worldwide.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Room 401-1, No.58, Xiangshan Road, Wenyan Street, Xiaoshan, Hangzhou, Zhejiang, China
-
Plant Area
- 100 square meters
-
Number of Employees
- 4
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays, one month, 1-3 months
Off Season Lead Time: within 15 workdays, one month, 1-3 months -
Nearest Port
- Shanghai Port, Ningbo Port
-
Minimum Order Quantity
- 1000 pcs
-
Supply Chain Partners
- 56
Our Production Capability & Technical Expertise
-
Main Products
- Bit Holders, Bits, Sockets, Torque Wrench, Ratchet, Hex Keys, Tool Set, Pta Sets, Bi-Metal Screws, Stainless Steel Fasteners
-
Customization Options
- Full Customization, Minor Customization, Flexible customization, Customization from Designs, Customization from Samples
-
ODM Service Available
- Yes
-
R&D Engineers
- 1 people
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2023-08-03
-
Export Year
- 1 year
-
Main Markets
- Europe, Africa, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
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